Ben Phongluangtham.1065 said: We're actually working on adjusting how the /stuck command works in PvP maps now. It won't be an instant death, but it will work much more reliably. Also, should provide some better feedback when used.

Additionally, we have a change we're putting in for player used knockbacks & pulls that should greatly reduce the frequency this happens. It's been going through testing now and if all goes well, will go out in the next few weeks.